Nginx反向代理https报错The plain HTTP request was sent to HTTPS port解决办法

为了解决Nginx反向代理https报错“The plain HTTP request was sent to HTTPS port”的问题，可以按照以下步骤进行操作：

1.在Nginx配置文件中添加以下代码：

server {
    listen 80;
    server_name yourdomain.com;
    return 301 https://$server_name$request_uri;
}

server {
    listen 443 ssl;
    server_name yourdomain.com;
    ssl_certificate /path/to/your/cert.pem;
    ssl_certificate_key /path/to/your/key.pem;
    ssl_protocols TLSv1 TLSv1.1 TLSv1.2;
    ssl_prefer_server_ciphers on;
    ssl_ciphers ECDHE-RSA-AES128-GCM-SHA256:HIGH:!aNULL:!MD5:!RC4:!DHE;
    location / {
        proxy_pass https://yourbackend;
        proxy_set_header Host $host;
        proxy_set_header X-Real-IP $remote_addr;
        proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
    }
}

2.将上述代码中的“yourdomain.com”替换为你的域名，将“/path/to/your/cert.pem”和“/path/to/your/key.pem”替换为你的SSL证书和密钥的路径，将“yourbackend”替换为你的后端服务器地址。

3.重新加载Nginx配置文件，使其生效。

通过以上步骤，就可以解决Nginx反向代理https报错“The plain HTTP request was sent to HTTPS port”的问题。